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Sinibaldi R, Conti A, Sinjari B, Spadone S, Pecci R, Palombo M, Komlev VS, Ortore MG, Tromba G, Capuani S, Guidotti R, De Luca F, Caputi S, Traini T, Della Penna S. Multimodal-3D imaging based on μMRI and μCT techniques bridges the gap with histology in visualization of the bone regeneration process. J Tissue Eng Regen Med 2017; 12:750-761. [PMID: 28593731 DOI: 10.1002/term.2494] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 04/23/2017] [Accepted: 06/05/2017] [Indexed: 01/05/2023]
Abstract
Bone repair/regeneration is usually investigated through X-ray computed microtomography (μCT) supported by histology of extracted samples, to analyse biomaterial structure and new bone formation processes. Magnetic resonance imaging (μMRI) shows a richer tissue contrast than μCT, despite at lower resolution, and could be combined with μCT in the perspective of conducting non-destructive 3D investigations of bone. A pipeline designed to combine μMRI and μCT images of bone samples is here described and applied on samples of extracted human jawbone core following bone graft. We optimized the coregistration procedure between μCT and μMRI images to avoid bias due to the different resolutions and contrasts. Furthermore, we used an Adaptive Multivariate Clustering, grouping homologous voxels in the coregistered images, to visualize different tissue types within a fused 3D metastructure. The tissue grouping matched the 2D histology applied only on 1 slice, thus extending the histology labelling in 3D. Specifically, in all samples, we could separate and map 2 types of regenerated bone, calcified tissue, soft tissues, and/or fat and marrow space. Remarkably, μMRI and μCT alone were not able to separate the 2 types of regenerated bone. Finally, we computed volumes of each tissue in the 3D metastructures, which might be exploited by quantitative simulation. The 3D metastructure obtained through our pipeline represents a first step to bridge the gap between the quality of information obtained from 2D optical microscopy and the 3D mapping of the bone tissue heterogeneity and could allow researchers and clinicians to non-destructively characterize and follow-up bone regeneration.
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Affiliation(s)
- R Sinibaldi
- Department of Neuroscience, Imaging and Clinical Sciences, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy
- Multimodal3D s.r.l., Rome, Italy
| | - A Conti
- Department of Neuroscience, Imaging and Clinical Sciences, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - B Sinjari
- Department of Medical and Oral Sciences and Biotechnologies, G. D'Annunzio University of Chieti and Pescara, Chieti, Italy
| | - S Spadone
- Department of Neuroscience, Imaging and Clinical Sciences, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - R Pecci
- Department of Technologies and Health, Istituto Superiore di Sanità, Rome, Italy
| | - M Palombo
- Department of Physics, Sapienza University of Rome, Rome, Italy
- CEA/DSV/I2BM, MIRCen, Fontenay-aux-Roses, France
| | - V S Komlev
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russian Federation
| | - M G Ortore
- Department of Life and Environmental Science, Marche Polytechnic University, Ancona, Italy
| | - G Tromba
- Elettra Sincrotrone Trieste, Trieste, Italy
| | - S Capuani
- CNR (Institute for Complex Systems) c/o Physics Department Sapienza University of Rome, Rome, Italy
| | - R Guidotti
- Department of Neuroscience, Imaging and Clinical Sciences, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - F De Luca
- Department of Physics, Sapienza University of Rome, Rome, Italy
| | - S Caputi
- Department of Medical and Oral Sciences and Biotechnologies, G. D'Annunzio University of Chieti and Pescara, Chieti, Italy
| | - T Traini
- Department of Medical and Oral Sciences and Biotechnologies, G. D'Annunzio University of Chieti and Pescara, Chieti, Italy
| | - S Della Penna
- Department of Neuroscience, Imaging and Clinical Sciences, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy
- Institute for Advanced Biomedical Technologies, G. D'Annunzio University of Chieti-Pescara, Chieti, Italy
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Spinello A, Ortore MG, Spinozzi F, Ricci C, Barone G, Gammazza AM, Piccionello AP. Quaternary structures of GroEL and naïve-Hsp60 chaperonins in solution: a combined SAXS-MD study. RSC Adv 2015. [DOI: 10.1039/c5ra05144d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Analysis with QUAFIT software combined with SAXS-MD data, allows resolution of GroEL and naïve-Hsp60 oligomeric structures in solution.
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Affiliation(s)
- A. Spinello
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo
- Italy
- Istituto EuroMediterraneo di Scienza e Tecnologia-IEMEST
- 90139 Palermo
| | - M. G. Ortore
- Dipartimento DiSVA
- Università Politecnica delle Marche
- 60131 Ancona
- Italy
| | - F. Spinozzi
- Dipartimento DiSVA
- Università Politecnica delle Marche
- 60131 Ancona
- Italy
| | - C. Ricci
- Dipartimento DiSVA
- Università Politecnica delle Marche
- 60131 Ancona
- Italy
| | - G. Barone
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo
- Italy
- Istituto EuroMediterraneo di Scienza e Tecnologia-IEMEST
- 90139 Palermo
| | - A. Marino Gammazza
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo
- Italy
- Istituto EuroMediterraneo di Scienza e Tecnologia-IEMEST
- 90139 Palermo
| | - A. Palumbo Piccionello
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo
- Italy
- Istituto EuroMediterraneo di Scienza e Tecnologia-IEMEST
- 90139 Palermo
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Mangione MR, Palumbo Piccionello A, Marino C, Ortore MG, Picone P, Vilasi S, Di Carlo M, Buscemi S, Bulone D, San Biagio PL. Photo-inhibition of Aβ fibrillation mediated by a newly designed fluorinated oxadiazole. RSC Adv 2015. [DOI: 10.1039/c4ra13556c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The interaction of oxadiazole3photo-stimulated with Aβ1–40induces a structural modification responsible for fibrillogenesis inhibition.
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Affiliation(s)
- M. R. Mangione
- Institute of Biophysics
- National Research Council
- Palermo
- Italy
| | - A. Palumbo Piccionello
- Institute of Biophysics
- National Research Council
- Palermo
- Italy
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies
| | - C. Marino
- Institute of Biophysics
- National Research Council
- Palermo
- Italy
- Department of Neurology
| | - M. G. Ortore
- Department of Life and Environmental Sciences
- National Interuniversity Consortium for the Physical Sciences of Matter
- Marche Polytechnic University
- Ancona
- Italy
| | - P. Picone
- Institute of Biomedicine and Molecular Immunology
- National Research Council
- Palermo
- Italy
| | - S. Vilasi
- Institute of Biophysics
- National Research Council
- Palermo
- Italy
| | - M. Di Carlo
- Institute of Biomedicine and Molecular Immunology
- National Research Council
- Palermo
- Italy
| | - S. Buscemi
- Institute of Biophysics
- National Research Council
- Palermo
- Italy
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies
| | - D. Bulone
- Institute of Biophysics
- National Research Council
- Palermo
- Italy
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Gonnelli A, Ortore MG, Baldassarri EJ, Spada GP, Pieraccini S, Perone RC, Funari SS, Mariani P. Small-angle X-ray scattering study of self-assembling lipophilic guanines in organic solvents: G-quadruplex formation and cation effects in cyclohexane. J Phys Chem B 2013; 117:1095-103. [PMID: 23294474 DOI: 10.1021/jp3121929] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Lipophilic guanilic derivatives (lipoGs) dissolved in organic solvents can undergo different self-assembly pathways based on different H-bonded motifs, e.g., the cyclic discrete G-quartet, which forms in the presence of alkali-metal ions, and the "infinite" tape-like G-ribbon observed in the absence of ions. Using in-solution small-angle X-ray scattering, we analyzed a series of lipoGs dissolved in cyclohexane in the presence of different salts. The formation of G-quartet based supramolecular aggregates has been confirmed, evidencing the coexistence equilibrium of octamers and noncovalent molecular nanowires (the so-called G-quadruplexes). By global fitting the scattering data, the concentration of the two kinds of particles as well as the nanowire length have been derived as a function of temperature for the different compounds and salts. The thermodynamic parameters show that the self-assembly aggregation process is enthalpy driven, while the observed enthalpy-entropy compensation suggests that similar stacking interactions control the self-assembly of the different compounds. However, the strength of the stacking interactions, and then the nanowire stability, depends on the nature of templating cations and on their capacity to fill the central cavity of quadruplexes, with the order Sr(+) < Na(+) ≲ K(+).
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Affiliation(s)
- A Gonnelli
- Dipartimento di Scienze della Vita e dell'Ambiente, Biophysics Research Group, Università Politecnica delle Marche, via Brecce Bianche, I-60131 Ancona, Italy
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Mariani P, Spinozzi F, Federiconi F, Ortore MG, Amenitsch H, Spindler L, Drevensek-Olenik I. Guanosine quadruplexes in solution: a small-angle x-ray scattering analysis of temperature effects on self-assembling of deoxyguanosine monophosphate. J Nucleic Acids 2010; 2010. [PMID: 20725625 PMCID: PMC2915817 DOI: 10.4061/2010/472478] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Accepted: 03/26/2010] [Indexed: 11/20/2022] Open
Abstract
We investigated quadruplex formation in aqueous solutions of 2′-deoxyriboguanosine 5′-monophosphate, d(pG), which takes place in the absence of the covalent axial backbone. A series of in-solution small angle X-ray scattering experiments on d(pG) have been performed as a function of temperature in the absence
of excess salt, at a concentration just above the critical one at which self-assembling occurs. A global fit
approach has been used to derive composition and size distribution of the scattering particles as a function
of temperature. The obtained results give thermodynamical justification for the observed phase-behavior,
indicating that octamer formation is essential for quadruplex elongation. Our investigation shows that d(pG)
quadruplexes are very suitable to assess the potential of G-quadruplex formation and to study the self-assembling thermodynamics.
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Affiliation(s)
- P Mariani
- Physical Science Section, Research Unit of Ancona, SAIFET Department, CNISM, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
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